SIC462 Datasheet, PDF (1/23 Pages) Vishay Siliconix – 4.5 V to 60 V Input, 6 A Synchronous Buck Regulator

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SiC462
Vishay Siliconix
4.5 V to 60 V Input, 6 A Synchronous Buck Regulator
FEATURES
• Single supply operation from 4.5 V to 60 V input voltage
• Adjustable output voltage down to 0.8 V
• 6 A continuous output current
• Adjustable switching frequency from 100 kHz to 2 MHz
• Adjustable current limit and soft start
• 98 % peak efficiency
DESCRIPTION
• Ultra-fast transient response
• ± 1 % output voltage accuracy
• Normal, ultrasonic or pulse skipping operation
The SiC462 is a wide input voltage high efficiency
• 5 μA shutdown current
synchronous buck regulator with integrated high-side and
• 250 μA operating current
low-side power MOSFETs. Its power stage is capable of
supplying 6 A continuous current at up to 2 MHz switching
frequency. This regulator produces an adjustable output
voltage down to 0.8 V from 4.5 V to 60 V input rail
to accommodate a variety of applications, including
computing, consumer electronics, telecom, and industrial.
SiC462’s architecture delivers ultra-fast transient response
with minimum output capacitance and tight ripple regulation
at very light load. The device is stable with any capacitor and
no external ESR network is required for loop stability. The
device also incorporates a power saving scheme that
significantly increases light load efficiency.
The regulators integrates a full protection feature set,
including over current protection (OCP), output overvoltage
protection (OVP), short circuit protection (SCP), output
undervoltage protection (UVP) and thermal shutdown (OTP).
It also has UVLO for input rail and a user programmable soft
start.
The SiC462 is available in lead (Pb)-free power enhanced
• Cycle-by-cycle current limit
• Output overvoltage protection
• Output undervoltage / short circuit protection
• Output voltage tracking and sequencing
• Scalable family of output current:
3 A (SiC463), 6 A (SiC462), 10 A (SiC461)
APPLICATIONS
• POLs for telecom
• Industrial and automation
• Industrial computing
• Consumer electronics
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MLP55-27L package.
TYPICAL APPLICATION CIRCUIT AND PACKAGE OPTIONS
P_GOOD
ENABLE
INPUT
4.5 V_DC to 60 V_DC
V_CIN
V_IN
V_DD
SS
MODE
I_LIMIT
f_SW
Phase
SW
SiC462
V _SNS
ULTRASONIC
V_FB
COMP
V_OUT
Fig. 1 - Typical Application Circuit for SiC462
S17-0360-Rev. D, 13-Mar-17
1
Document Number: 65124
For technical questions, contact: [e-mail]
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